1 and 1947 The introduction of American Truman Doctrine marked the beginning of the Cold War. The establishment of the Warsaw Pact in 1955 marked the formation of a bipolar pattern.

2. Bipolar mode

In time, the bipolar pattern existed in the early 1950s-it ended with the disintegration of the Soviet Union at the end of 199 1. It is manifested in the military confrontation between NATO and Warsaw Pact led by the United States and the Soviet Union, the struggle for the third world, the mutual economic embargo and blockade, the crazy competition in armaments, the attempt to gain the advantage of defeating the opponents, and the ideological attack on each other. Generally speaking, the two major groups, the United States and the Soviet Union, occupy an absolute dominant position in the world power structure, and they are hostile and antagonistic to each other, but they cannot overcome the world power division situation of their opponents.